913988 has 12 divisors (see below), whose sum is σ = 1693692. Its totient is φ = 430080.

The previous prime is 913981. The next prime is 913999. The reversal of 913988 is 889319.

913988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 407044 + 506944 = 638^2 + 712^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (913981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6653 + ... + 6788.

It is an arithmetic number, because the mean of its divisors is an integer number (141141).

2⁹¹³⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

913988 is a deficient number, since it is larger than the sum of its proper divisors (779704).

913988 is a wasteful number, since it uses less digits than its factorization.

913988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13462 (or 13460 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 913988 is about 956.0271962659. The cubic root of 913988 is about 97.0465642450.

The spelling of 913988 in words is "nine hundred thirteen thousand, nine hundred eighty-eight".